Any aircraft that utilizes bird-like flapping wings, man or unmanned, human-powered or engine-powered, belongs here.
However, please do not post hybrid designs here that can be considered rotorcraft (e.g. the Fuseri-Miller "ortho-helicopter") - if it has a vertical rotor/propeller system, then please post it in the main sections. Thank you.
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lllllAs of 2019 I have transitioned; My name is now Rei. Please don't deadname or misgender me, thank you. <3 lllll